This map is intended to effectively communicate the current per-capita rate of COVID-19 infections for each county in the USA. The qualitative color map ranges from green (best) to violet (worst) in five bins which vary by factors of three in the per-capita cases. Color opacity is scaled by the logarithm of the confirmed 7-day cases per unit area to emphasize places with large absolute numbers of infectious cases.
Hover over a county for a popup which shows the county and state, estimated number of infectious cases per thousand people, number of confirmed cases in the county over the past seven days, the percent positive tests in the state over the past seven days, and the date at which the statistics were updated. If the updated date is more than a day ago, please refresh your browser.
actual = 28 * (confirmed 7-day cases) * sqrt(7-day positive fraction)